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    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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<body>
    
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<script>
    // 算术运算符    + - * /  %    => 优先级: 先乘除取余 再加减

    // console.log(10 + 3);
    // console.log(10 - 3);
    // console.log(10 * 3);
    // console.log(10 / 3);   // 10(被除数)  /  3(除数)  = 3.3333333 (商)
    // console.log(10 % 3);   // 10(被除数)  /  3(除数)  = 3(商) ... 1(余)


    var a = 10;
    var b = 3;
    console.log(a + b);
    console.log(a - b);
    console.log(a * b);
    console.log(a / b);
    console.log(a % b);
    
    console.log(5+3*2);
    
</script>
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